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Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 6551118729

Certificate GIA 6551118729

Diamond specifications and retailer prices

From $7,044 AUD
As of November 6, 2026
Save $6,750 AUD (49%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $13,794 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551118729. Listed at 8 retailers as of November 4, 2026, with prices from $7,044 to $13,794, a $6,750 spread on the same certified stone. MOH London lists it at $13,794. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551118729
Dimensions9.31 × 6.06 × 4.10 mm
L/W Ratio1.54
Top View
9.31 mm6.06 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551118729
Side View
Table 56.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 67.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $13,794 AUD|Low: $7,044 AUD|High: $13,998 AUD|Avg: $9,906 AUD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$7,044 AUD
Retailer 3$8,916 AUD
Retailer 5$9,387 AUD
Retailer 4$10,253 AUD
MOH London$13,794 AUD

42 data points across 5 retailers

8 retailers$7,044 AUD to $13,794 AUD

A
Cheapest Retailer
-
$7,044 AUD
A
Retailer 2
-
$8,166 AUD
View
A
Retailer 3
-
$8,188 AUD
View
A
Retailer 4
-
$8,916 AUD
View
Retailer 5
-
$9,387 AUD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$9,617 AUD
View
A
Retailer 7
-
$10,253 AUD
View
Most Expensive
B+
MOH London
AFA2496EC · Nov 4
$13,794 AUD
£7,463 GBP
View
7 more retailers have this diamond
Prices start from $7,044 AUDSave up to $6,750 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Oval
$7,044 AUD